Which statement is true about CAT III operations?

• A. CAT III requires no decision height (DH)
• B. CAT III requires 200 ft DH
• C. CAT III requires 100 ft DH
• D. CAT III requires 50 ft DH

Answer: (A)

CAT III operations are designed for very low visibility landings using automated guidance and autoland capabilities, so there is no need for a decision height to determine whether to continue the approach. The approach minimums are expressed in terms of runway visual range (RVR) and system capability, not a pilot’s visual cue at a specific altitude. This is why the statement that there is no decision height is true for CAT III.

The other options assign a specific decision height (DH) value, which would imply you must decide to continue visually at a certain altitude. In CAT III operations, the landing decision is not based on seeing the runway at a fixed height; instead, the automation handles the approach to touchdown within the approved minima, making a DH unnecessary.